The Bearing,plain,spherical, cataloged under National Stock Number 3120-01-004-1997, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is The Boeing Company Div Legacy Am&m. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-004-1997 |
| Primary Part Number | 120-33144-3 |
| Item Name | Bearing,plain,spherical |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| Surface Finish | 100.0 MICROINCHES OVERALL |
| Corner Shape | SQUARE INSIDE RIGHT CORNER |
| Corner Shape | SQUARE INSIDE LEFT CORNER |
| Style Designator | SOLID |
| Body Inside Diameter | 1.3750 INCHES MINIMUM AND 1.3800 INCHES MAXIMUM IN |
| Lubricant Accommodation Style | GROOVED CIRCULAR |
| Surface Treatment | CHROMIUM LEFT END SURFACE |
| Surface Treatment | CHROMIUM RIGHT END SURFACE |
| Antirotation/lubrication Type and Quantity | 2 HOLE |
| Material | STEEL COMP 4130 OVERALL |
| Spherical Body Diameter | 1.8145 INCHES MINIMUM AND 1.8150 INCHES MAXIMUM IN |
| Hole Diameter | 0.0625 INCHES NOMINAL FIRST IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 120-33144-3 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
NSN 3120-01-004-1997 is a Bearing,plain,spherical, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-004-1997 has 1 manufacturer part number on file: 120-33144-3 (The Boeing Company Div Legacy Am&m).
Key specifications for 120-33144-3: Surface Finish: 100.0 MICROINCHES OVERALL; Corner Shape: SQUARE INSIDE RIGHT CORNER; Corner Shape: SQUARE INSIDE LEFT CORNER; Style Designator: SOLID. 12 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.